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<h1 class="topictitle1">Planning the Replication Network</h1>
<div><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p165141546151618">Before creating a replication job, ensure that the replication network has been established and meets the related network requirements. This section describes the requirements for the replication network and networking support.</p>
<p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_p1547143612815">All figures in this section assume that the OceanProtect X series backup appliance is used.</p>
<div class="section" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_section12984845121520"><h4 class="sectiontitle">Requirements for the Replication Network</h4><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1511034811516">For replication, the replication and backup networks of the <span id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_text127010210018">OceanProtect</span> must use the same interface modules. <a href="#EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403">Table 1</a> describes the requirements for the replication network.</p>

<div class="tablenoborder"><a name="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403"></a><a name="en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_table152358182403" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Requirements for the replication network</caption><colgroup><col style="width:21.740000000000002%"><col style="width:78.25999999999999%"></colgroup><thead align="left"><tr id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row112356184404"><th align="left" class="cellrowborder" valign="top" width="21.740000000000002%" id="mcps1.3.3.3.2.3.1.1"><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p72359181409">Item</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="78.25999999999999%" id="mcps1.3.3.3.2.3.1.2"><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p20235131813408">Network Requirement</p>
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<tbody><tr id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row1388919291310"><td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1588917213131">Replication network</p>
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<td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1588912218134">For details about network connections for the replication networks of the primary and secondary storage systems, see "Networking Planning" in the <i><cite id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_cite57171056122614">Installation Guide</cite></i>.</p>
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<tr id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row32359186402"><td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p182357188409">Replication network protocol</p>
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<td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p523520189408">TCP/IP protocol</p>
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<tr id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row141891258184312"><td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p31891358164312">IP address</p>
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<td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_p57551828105717">For details about the configuration requirements, see "Networking Planning" in the <i><cite id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_cite118241752104117">Installation Guide</cite></i> specific to your product model.</p>
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<tr id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row1267393041820"><td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p10963471819">IP address type</p>
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<td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p149193419187">IPv4 or IPv6</p>
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<tr id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_row136406311993"><td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p123501844017">Network quality requirements</p>
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<td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.3.3.2.3.1.2 "><ul id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_ul11355643174214"><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li143551343124215">Round-trip time (RTT) ≤ 100 ms</li><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li15355194313422">Bandwidth ≥ 10 MB</li><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li14355124334214">Packet loss rate &lt; 0.1%</li></ul>
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<tr id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_row17272394333"><td class="cellrowborder" valign="top" width="21.740000000000002%" headers="mcps1.3.3.3.2.3.1.1 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_p1727639193314">Management network</p>
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<td class="cellrowborder" valign="top" width="78.25999999999999%" headers="mcps1.3.3.3.2.3.1.2 "><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_p472763983313">If you plan to add the replication target cluster based on a management IP address, ensure that the management network of the primary end is connected to that of the secondary end.</p>
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<div class="section" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_section1715344820211"><h4 class="sectiontitle">Replication Network</h4><p id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_p1041775814153">The <span id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_text14901056181713">OceanProtect</span> supports the following replication network types:</p>
<ul id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_ul3387161518167"><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_li3411165471410">1:1 replication</li><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_li9697132712184">1:<em id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_i1798416191810">N</em> replication (the maximum value of <em id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_i3984176121818">N</em> is 4)</li><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li3717729161610"><em id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_i3515152555816">N</em>:1 replication (the maximum value of <em id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_i2515142519582">N</em> is 32 for the OceanProtect X series backup appliances and 16 for OceanProtect E1000)</li><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_li14501153781810">Reverse replication</li><li id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_en-us_topic_0000001233857383_en-us_topic_0000001171395182_li13387151561610">Cascaded replication (A &gt; B &gt; C)</li></ul>
<div class="fignone" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002199966865_en-us_topic_0000002200147093_fig162681057182712"><span class="figcap"><b>Figure 1 </b>1:N replication</span><br><span><img class="eddx" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_image16268125702717" src="en-us_image_0000002227730613.png"></span></div>
<div class="fignone" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_fig3547184421920"><span class="figcap"><b>Figure 2 </b>N:1 replication</span><br><span><img class="eddx" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_image13574184491020" src="en-us_image_0000002200147341.png"></span></div>
<div class="fignone" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_fig221195610199"><span class="figcap"><b>Figure 3 </b>Reverse replication</span><br><span><img class="eddx" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_image69588020288" src="en-us_image_0000002164820754.png"></span></div>
<div class="fignone" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_fig9946115821917"><span class="figcap"><b>Figure 4 </b>Cascaded replication</span><br><span><img class="eddx" id="EN-US_TOPIC_0000002164666006__en-us_topic_0000002171294230_en-us_topic_0000002200147093_image106528702816" src="en-us_image_0000002164661046.png"></span></div>
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